Download the 'stitching software' for your pc at:
http://research.microsoft.com/en-us/um/redmond/groups/ivm/ICE/
Video about other features of ICE: https://youtu.be/zhdXLH2GYPA
the ICE software and the UPLOAD software. ICE has two versions - for 32 bit windows and 64 bit windows installs. You need to know whether you have 32 bit windows OS or 64 bit OS to decide which of the versions you need to install.
Click Start, right-click Computer, and then click Properties. The version is displayed in the System type field under the System heading.
For those who own a macintosh you will need to use Photoshop's utility to merge the images together.
see automatic stitching:
http://youtube.com/watch?v=dAk_aw0IYjU
and a manual method: